Allegheny Valley Hospital hosts free program on the importance of colon cancer screenings Tawnya Panizzi Friday, March 25, 2022 12:01 p.m. | Friday, March 25, 2022 12:01 p.m. Go Ad-Free Today! Louis B. Ruediger | Tribune-Review Allegheny Valley Hospital Courtesy of AHN Dr. Steven Gribar, a surgeon, will present a free seminar April 21 on colorectal cancer and proper screening at Allegheny Valley Hospital. Share this post: Facebook Twitter LinkedIn Reddit Email